art::ServiceHandle< T, SCOPE > Class Template Reference

#include "ServiceHandle.h"

Public Member Functions
	ServiceHandle ()
T *	operator-> () const
T &	operator* () const
T *	get () const

Private Attributes
T *	instance

Detailed Description

template<typename T, ServiceScope SCOPE = detail::ServiceHelper<std::remove_const_t<T>>::scope_val>
class art::ServiceHandle< T, SCOPE >

Definition at line 37 of file ServiceHandle.h.

Constructor & Destructor Documentation

template<typename T, ServiceScope SCOPE = detail::ServiceHelper<std::remove_const_t<T>>::scope_val>

art::ServiceHandle< T, SCOPE >::ServiceHandle ( )

inline

Definition at line 44 of file ServiceHandle.h.

        : instance{&ServiceRegistry::instance().get<std::remove_const_t<T>>()} {
    }
    catch (Exception const& x) {
      throw Exception(errors::ServiceNotFound)
        << "Unable to create ServiceHandle.\n"
        << "Perhaps the FHiCL configuration does not specify the necessary "
           "service?\n"
        << "The class of the service is noted below...\n"
        << x;
    }

Member Function Documentation

template<typename T, ServiceScope SCOPE = detail::ServiceHelper<std::remove_const_t<T>>::scope_val>

T* art::ServiceHandle< T, SCOPE >::get ( ) const

inline

Definition at line 69 of file ServiceHandle.h.

Referenced by artg4tk::artg4tkMain::beginRun(), reco_tool::CandHitDerivative::CandHitDerivative(), reco_tool::CandHitMorphological::CandHitMorphological(), lar_cluster3d::StandardHit3DBuilder::configure(), lar_cluster3d::SnippetHit3DBuilder::configure(), img::DataProviderAlg::DataProviderAlg(), lar_cluster3d::HoughSeedFinderAlg::HoughSeedFinderAlg(), lar_cluster3d::Cluster3D::InitializeMonitoring(), lar_cluster3d::PCASeedFinderAlg::PCASeedFinderAlg(), fluxr::PPFXFluxReader::PPFXFluxReader(), and lar_cluster3d::PrincipalComponentsAlg::PrincipalComponentsAlg().

    {
      return instance;
    }

template<typename T, ServiceScope SCOPE = detail::ServiceHelper<std::remove_const_t<T>>::scope_val>

T& art::ServiceHandle< T, SCOPE >::operator* ( ) const

inline

Definition at line 63 of file ServiceHandle.h.

    {
      return *instance;
    }

template<typename T, ServiceScope SCOPE = detail::ServiceHelper<std::remove_const_t<T>>::scope_val>

T* art::ServiceHandle< T, SCOPE >::operator-> ( ) const

inline

Definition at line 57 of file ServiceHandle.h.

    {
      return instance;
    }

Member Data Documentation

template<typename T, ServiceScope SCOPE = detail::ServiceHelper<std::remove_const_t<T>>::scope_val>

T* art::ServiceHandle< T, SCOPE >::instance

private

Definition at line 75 of file ServiceHandle.h.

Referenced by art::ServiceHandle< art::FileTransfer >::get(), art::ServiceHandle< art::FileTransfer >::operator*(), and art::ServiceHandle< art::FileTransfer >::operator->().

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The documentation for this class was generated from the following file:

• art/Framework/Services/Registry/ServiceHandle.h